Cathedral

No matter whether you are religious, agnostic or atheist, the great old churches and temples of this world carry a powerful charge of energy from the centuries of prayer, of song and of silence that have been carried out there. Even now, most folk hush themselves when they enter an ancient church and take a moment to feel the echo of the ages.

Now, I love tours. Don't even talk to me about those audio-guide ones, though - give me need a real, live, flesh-and-blood tour guide with a positive attitude, a wealth of knowledge and a clearance badge any day.